.main {
  width: 80%;
  margin: 0 auto;
  display: flex;
}
.main .left {
  width: 300px;
}
.main .left ul li {
  color: #666;
}
.main .left ul li:hover {
  color: white;
  background-color: #666;
  transition: 0.7s;
}
.main .left ul li div {
  padding: 20px;
}
.main .left ul li ul {
  background-color: #fff;
  padding: 0;
}
.main .left ul li ul li {
  font-size: 14px;
  color: #666;
  padding: 5px 0 5px 40px;
}
.main .left ul li ul li:hover {
  color: white;
  background-color: #7e7d7d;
  transition: 0.7s;
}
.main .right {
  border-left: 1px solid #ccc;
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.main .right input {
  border: 1px solid #666;
  width: 300px;
  height: 50px;
  margin: 0 5px;
}
.main .right button {
  width: 100px;
  height: 50px;
  border: 0;
  background-color: #666;
  color: #fff;
  text-align: center;
  line-height: 50px;
}
.main .right img {
  width: 50%;
}
